creating a new file

[brian vant-hull]

It looks like the problem is with your data, not grads, and you actually don't have defined values in that particular time period and region.  Look at different times and places to convince yourself data does exist somewhere, and if not, go back to the MM5 and see what's wrong.

Wajeeha Shafeeq <wajeeha.shafeeq at GCISC.ORG.PK> wrote:        Hi,
 I am using MM5 output data.  I have to write a file on some particular lat/lon. For this I am  using the following script.
 #####################################################
 'open  mmoutjan05-3-01.ctl'
 'set lon 70  80'
 'set lat 32  38'
 'set gxout  fwrite'
 'set fwrite  humidity.dat'
 t=1
 while(t<=40)
 'set t  't
 'd  const(t,-9999,-u)'
 t=t+1
 endwhile
 'disable  fwrite'
 reinit
 ####################################################
 The ctl is as  follows:
 #####################################################
 dset  ^humidity.dat
 byteswapped
 title MM5  data
 undef  -9999.
 pdef 102 102 lcc 26.83  66.62 1.00 1.00 30.00 60.00 73.00 12000. 12000.
 xdef 163 linear 70  0.0541
 ydef 105 linear 32  0.0541
 zdef 23 levels
 0.99500
 0.98500
 0.97000
 0.94500
 0.91000
 0.87000
 0.82500
 0.77500
 0.72500
 0.67500
 0.62500
 0.57500
 0.52500
 0.47500
 0.42500
 0.37500
 0.32500
 0.27500
 0.22500
 0.17500
 0.12500
 0.07500
 0.02500
 tdef 40 linear  06:00Z01JAN2005 360MN
 vars 1
 rh 23 99 rel humidity (%)
 endvars
 ###########################################################
 The problem is when I open  the new file and displays its variable it give the following  error
 "Contouring: nan to nan  interval inf"
 I have made this ctl file  by changing the xdef and ydef values of the original MM5 ctl  file.
 Regards,
 Wajeeha  Shafeeq




Brian Vant-Hull
301-646-1149

---------------------------------
Cheap Talk? Check out Yahoo! Messenger's low PC-to-Phone call rates.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20061130/3db2053b/attachment.html